[PSUBS-MAILIST] Life Support

Fri Mar 13 11:07:54 EDT 2015

Hi Hugh,

The system was designed by me, but like everything, it also has purchased
parts. The oxygen is delivered by a standard cylinder/regulator/flow meter,
setup to deliver at the standard rate that will be consumed, this can be
adjusted since there are variables like; the number of occupants, etc.. an
O2 high/low alarm helps ensure the range is maintained. This O2 is delivered
to the cabin, through the CO2 scrubber since it has a fan and will help
disperse the O2 into the cabin. It is also connected to the scrubber to
ensure O2 and scrubbed/filtered air is delivered directly to full face
respirators (and not the fire) for consumption in an emergency situation. In
this situation, the occupant's lungs do the work, not a fan, since
electrical power may not be available. The scrubber is designed around using
"Pre-Pak" carbon dioxide absorbent containers that can be quickly changed
out, they eliminate the possibility of dusting the cabin with absorbent. It
has two pwm fans (one is a backup), and an air filter. Combating a fire, may
be best done with a Super Soaker filled with deionized water.

This system is compact, fairly simply and very reliable. I would like to
offer it as a purchasable kit someday to those wanting a complete system.

Yes, one of these days I should add my stuff to the photos section of the
PSUBS page.

Adam

  _____  

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
On Behalf Of Hugh Fulton via Personal_Submersibles
Sent: Thursday, March 12, 2015 4:42 PM
To: 'Personal Submersibles General Discussion'
Subject: Re: [PSUBS-MAILIST] Ballast air

Hi Adam,

It would be nice to see some photos or something on your system.  Did you
buy it or make it?

If there is a fire then the oxygen will burn up.  So how do you monitor the
amount you will need? Also if you have some fire extinguisher you may be
adding other chemicals to the air inside which a BIBS system will negate.
Interesting subject.  Hugh

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
On Behalf Of Adam Lawrence via Personal_Submersibles
Sent: Thursday, 12 March 2015 3:25 p.m.
To: 'Personal Submersibles General Discussion'
Subject: Re: [PSUBS-MAILIST] Ballast air

Hi Allen,

What I have is simpler than a full blown rebreather.

The oxygen supply/flow enters the cabin at the scrubber canister. The
canister has an air filter on it already (dust/smoke/hydrogen sulfide...).
The emergency piece of equipment is a full face mask with a hose that
connects to the scrubber assembly (fan off) on the inhale side, exhale goes
back into the cabin.

The next simple version may be just a full face mask with dust/vapor
cartridge, good enough to keep your eyes and lungs clean while making a
quick ascent.

Those millionaires get all the toys.

Adam

  _____  

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
On Behalf Of Alan James via Personal_Submersibles
Sent: Wednesday, March 11, 2015 5:27 PM
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] Ballast air

Hi Adam,

that would require a rebreather style set up to do that.

I believe they had a rebreather back up on James Camerons sub.

A bit expensive & complicated.

Alan

  _____  

From: Adam Lawrence via Personal_Submersibles
<personal_submersibles at psubs.org>
To: 'Personal Submersibles General Discussion'
<personal_submersibles at psubs.org> 
Sent: Thursday, March 12, 2015 8:27 AM
Subject: Re: [PSUBS-MAILIST] Ballast air

For emergencies, wouldn't you use a full-face mask connected to a CO2
scrubber and air filter and pure oxygen, all on the inhale side...

Compressed scuba air would increase cabin pressure and make things
uncomfortable...

-----Original Message-----
From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
On Behalf Of hank pronk via Personal_Submersibles
Sent: Wednesday, March 11, 2015 10:26 AM
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] Ballast air

Brian,
I don't mean oxygen, I mean  regular scuba air.  I have and am sure all
other subs have scuba breathing apparatus for emergencies like smoke.  I
take air from my ballast supply for that purpose.  If your ballast air is
Nitrogen then you will need an extra tank for emergency breathing.  
Hank --------------------------------------------
On Wed, 3/11/15, Brian Cox via Personal_Submersibles
<personal_submersibles at psubs.org> wrote:

Subject: Re: [PSUBS-MAILIST] Ballast air
To: "Personal Submersibles General Discussion"
<personal_submersibles at psubs.org>
Received: Wednesday, March 11, 2015, 10:18 AM

Yes, my oxygen will be a separate
tank, or tanks.

Brian

--- personal_submersibles at psubs.org
wrote:

From: hank pronk via Personal_Submersibles
<personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion
<personal_submersibles at psubs.org>
Subject: Re: [PSUBS-MAILIST] Ballast air
Date: Wed, 11 Mar 2015 05:37:11 -0700

Brian,
You must be planning to have a separate tank for emergency  air for
breathing, in case of fire etc.
Hank
--------------------------------------------
On Wed, 3/11/15, Brian Cox via Personal_Submersibles
<personal_submersibles at psubs.org>
wrote:

  Subject: [PSUBS-MAILIST] Ballast air
  To: "PSubs" <personal_submersibles at psubs.org>
  Received: Wednesday, March 11, 2015, 2:50 AM

  I'm planning on having
  3 - 300cu ft air cylinders for my ballast supply air.
  I noticed that if I get them filled with nitrogen it is
  cheaper than getting breathing or industrial air
  !   That is, until I get my own
  compressor. Brian

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